The 2 favorites are the Mag 15XL and the OS 15LA from what I've seen so far. Some are saying the OS is more trouble-free and durable than the Mag. They say the OS turns a 8x3 prop better, but I can't say one way or another if this is true. They both seemed evenly matched at the Tyler SSC meet this past Saturday. You probably can't go wrong with either one....

I fly Mag's and love them!